Kramer Electronics, Ltd.
USER MANUAL
Model:
VS-21B
2x1 Audio / Video / Component Switcher
Contents
Contents
1
2
3
4
5
6
Figures
Figure 1: VS-21B 2x1 Audio / Video / Component Switcher 2
Figure 2: Connecting the VS-21B 4
Introduction 1
Getting Started 1
Overview 1
Your VS-21B 2x1 Audio / Video / Component Switcher 2
Connecting the VS-21B 3
Technical Specifications 5
Tables
Table 1: VS-21B 2x1 Audio / Video / Component Switcher Features 2
Table 2: Technical Specifications of the VS-21B 5
i
Introduction
1 Introduction
Welcome to Kramer Electronics (since 1981): a world of unique, creative and
affordable solutions to the infinite range of problems that confront the video,
audio and presentation professional on a daily basis. In recent years, we have
redesigned and upgraded most of our line, making the best even better! Our
500-plus different models now appear in 8 Groups
1
, which are clearly defined
by function. Congratulations on purchasing your VS-21B 2x1 Audio / Video /
Component Switcher. The Kramer VS-21B is ideal for:
Home cinema switching
Ultra high bandwidth signal switching
The package includes the following items:
VS-21B 2x1 Audio / Video / Component Switcher
2
This user manual
2 Getting Started
We recommend that you:
Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
Review the contents of this user manual
Use Kramer high performance high resolution cables
3
3 Overview
The high resolution VS-21B 2x1 Audio / Video / Component Switcher is a
desktop-sized, HDTV compatible, mechanical switcher. It can, for example,
be used as a 2x1 composite video and unbalanced stereo audio switcher, or as
a 2x1 component video switcher. In particular, the VS-21B:
Uses an “RF” PCB design with 3 ultra high bandwidth channels,
providing bandwidth of 700
almost any common signal
Provides a simple solution for many switching needs and as the design is
passive, it does not need power, thus increasing its versatility
1 GROUP 1: Distribution Amplifiers; GROUP 2: Video and Audio Switchers, Matrix Switchers and Controllers; GROUP 3:
Video, Audio, VGA/XGA Processors; GROUP 4: Interfaces and Sync Processors; GROUP 5: Twisted Pair Interfaces;
GROUP 6: Accessories and Rack Adapters; GROUP 7: Scan Converters and Scalers; and GROUP 8: Cables and Connectors
2 Download up-to-date Kramer user manuals from our Web site at http://www.kramerelectronics.com
3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com
MHz, and is therefore suitable for use with
1
Your VS-21B 2x1 Audio / Video / Component Switcher
To achieve the best performance:
Connect only good quality connection cables, thus avoiding interference,
deterioration in signal quality due to poor matching, and elevated noise
levels (often associated with low quality cables)
Avoid interference from neighboring electrical appliances and position your
Kramer VS-21B away from moisture, excessive sunlight and dust
4 Your VS-21B 2x1 Audio / Video / Component Switcher
Figure 1 and Table 1 define the front and rear panels of the VS-21B:
Figure 1: VS-21B 2x1 Audio / Video / Component Switcher
Table 1: VS-21B 2x1 Audio / Video / Component Switcher Features
# Feature Function
1 INPUT SELECTOR Switch Push in to select INPUT 2; release to select INPUT 1
2 A BNC Connector
1
3 B RCA Connector
INPUT 1
4
5 A BNC Connector
6 B RCA Connector
7
1 Same for INPUT 2
2
C RCA Connector
OUTPUT
C RCA Connector
Connects to the component video source, or to the
composite video and unbalanced stereo audio
Connects to the component video acceptor, or to the
composite video and unbalanced stereo audio acceptor
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting the VS-21B
5 Connecting the VS-21B
To connect your VS-21B, as a 2x1 component video switcher1, as illustrated
in the example in Figure 2, do the following2:
1. Connect a component video source (for example, a set top box source) to
the INPUT 1 channels, as follows:
Connect the Y component video channel to BNC connector A
Connect the B-Y component video channel to RCA connector B
Connect the R-Y component video channel to RCA connector C
2. Connect a component video source (for example, a Betacam video
player) to the INPUT 2 channels, as follows:
Connect the Y component video channel to BNC connector A
Connect the B-Y component video channel to RCA connector B
Connect the R-Y component video channel to RCA connector C
3. Connect the OUTPUT channels to a component video acceptor (for
example, a plasma display), as follows:
Connect BNC connector A to the Y component video channel
Connect RCA connector B to the B-Y component video channel
Connect RCA connector C to the R-Y component video channel
4. Push in the front panel INPUT SELECTOR switch to route input 2, or
release it to route input 1.
1 Alternatively, you can connect your V S-21B as a switcher for composite video and unbalanced stereo audio (not illustrated
in Figure 2). In thi s case, connect the composite video channel to the BNC connector A, and the left and right audio channels
to the RCA connectors B and C, respectively
2 Switch OFF the power on each device before connecting it to your VS-21B. After connecting your VS-21B, switch on the
power on each device
3
Connecting the VS-21B
Video Player
Plasma
Display
Set Top Box
4
Betacam
Source
Figure 2: Connecting the VS-21B
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Technical Specifications
6 Technical Specifications
Table 2 includes the technical specifications:
Table 2: Technical Specifications1 of the VS-21B
INPUTS: 2 sets of composite video, each on a BNC connector, and 2 sets
OUTPUT: 1 set of composite video on a BNC connector, and unbalanced
BANDWIDTH (-3dB): 700MHz
DIFF. GAIN: 0.01%
DIFF. PHASE: 0.01°
K-FACTOR: <0.05%
VIDEO S/N RATIO: 81dB
VIDEO CROSSTALK (all hostile): 51dB@5MHz
CONTROLS: Channel selector via push button on front panel
SWITCHING SYSTEM: Mechanical, “Break-before-make”
COUPLING: DC
AUDIO THD + NOISE: 0.085%
AUDIO 2nd HARMONIC: 0.005%
POWER SOURCE: Not fed - mechanical
DIMENSIONS: 18.8cm x 10.2cm x 4.4cm (7.4" x 4" x 1.7"), W, D, H
WEIGHT: 0.64kg. (1.4lbs.) approx.
OPTIONS: RK-81 19” Rack Adapter
of unbalanced stereo audio, each on RCA connectors, or
2 sets of component video (YUV) each on a BNC connector and
2 RCA connectors
stereo audio on RCA connectors, or
1 set of component video (YUV) on a BNC connector and 2
RCA connectors
1 Specifications are subject to change without notice
5
LIMITED WARRANTY
Kramer Electronics (hereafter Kramer) warrants this product free from defects in material and workmanship under the
following terms.
HOW LONG IS THE WARRANTY
Labor and parts are warranted for seven years from the date of the first customer purchase.
WHO IS PROTECTED?
Only the first purchase customer may enforce this warranty.
WHAT IS COVERED AND WHAT IS NOT COVERED
Except as below, this warranty covers all defe cts in material or workmanship in this product. The following are not covered
by the warranty:
1. Any product which is not distributed by Kramer, or which is not purchased from an authorized Kramer dealer. I f you are
uncertain as to whether a dealer is authorized, please contact Kramer at one of the agent s listed in the web site
www.kramerelectronics.com.
2. Any product, on which the serial number has been defaced, modified or removed.
3. Damage, deterioration or malfunction resulting from:
i) Accident, misuse, abuse, neglect, fire, water, lightning or other acts of nature
ii) Product modification, or failure to follow instructions supplied with the product
iii) Repair or attempted repair by anyone not authorized by Kramer
iv) Any shipment of the product (claims must be presented to the carrier)
v) Removal or installation of the product
vi) Any other cause, which does not relate to a product defect
vii) Cartons, equipment enclosures, cables or accessories used in conjunction with the product
WHAT WE WILL PAY FOR AND WHAT WE WILL NOT PAY FOR
We will pay labor and material expenses for covered items. We will not pay for the following:
1. Removal or installations charges.
2. Costs of initial technical adjustments (set-up), including adjustment of user controls or programming. These co sts are the
responsibility of the Kramer dealer from whom the product was purchased.
3. Shipping charges.
HOW YOU CAN GET WARRANTY SERVICE
1. To obtain service on you product, you must take or ship it prepaid to any authorized Kramer service center.
2. Whenever warranty service is required, the original dated invoice (or a copy) must be presented as proof of warranty coverage,
and should be included in any shipment of the product. Please also include in any mailing a contact name, company, address, and
a description of the problem(s).
3. For the name of the nearest Kramer authorized service center, consult your authorized dealer.
LIMITATION OF IMPLIED WARRANTIES
All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty.
EXCLUSION OF DAMAGES
The liability of Kra mer for any effective products is li mited to the repair or replacement of the product at our option. Kramer
shall not be liable for:
1. Damage to other pro perty caused by defects in this product, damages based upon inconvenience, loss of use of the product , loss
of time, commercial loss; or:
2. Any other damages, whether incidental, consequential or otherwise. So me countries may not allow limitations on how long an
implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so t he above
limitations and exclusions may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights, which vary from place to place.
NOTE: All products returned to Kramer for service must have prior approval. This may be obtained from your dealer.
This equipment has been tested to determine compliance with the requirements of:
EN-50081: "Electromagnetic compatibility (EMC);
EN-50082: "Electromagnetic compatibility (EMC) generic immunity standard.
CFR-47: FCC Rules and Regulations:
CAUTION!
Servicing the machines can only be done by an authorized Kramer technician. Any user who makes changes or modifications to
the unit without the expressed approval of the manufacturer will void user authority to operate the equipment.
Use the supplied DC power supply to feed power to the machine.
Please use recommended interconnection cables to connect the machine to other components.
generic emission standard.
Part 1: Residential, commercial and light industry"
Part 1: Residential, commercial and light industry environment".
Part 15: “Radio frequency devices
Subpart B – Unintentional radiators”
6
KRAMER: SIMPLE CREATIVE TECHNOLOGY
For the latest information on our products and a list of Kramer
distributors, visit our Web site: www.kramerelectronics.com,
where updates to this user manual may be found.
We welcome your questions, comments and feedback.
Safety Warning:
Disconnect the unit from the power supply before
opening/servicing.
Caution
Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: info@kramerel.com
P/N: 2900-000 REV 1
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